Jia X., Wang H., Min Y. et al. · Microchimica Acta · 2026 · 477
Open a family to keep every result attached to its sample, method and conditions.
Paraphrased for this database from the authors’ stated interpretations — never quoted verbatim — and kept separate from reported measurements.
The sensor was applied to tomato, grape and corn matrices using standard addition, with tabled recoveries from 95.53% to 106.40% and agreement with HPLC comparison values.
Caveat: The narrative reports a different recovery range (103.68-108.54%) from the values visible in Table 1; table values were extracted directly.
8 · Practical application · Table 1 · Linked to 4 structured results
The Co-HHTQ-MOF/GCE sensor shows repeatability, 10-day stability within 10% current variation, and anti-interference responses below 1% without IMI and within 5% with IMI.
Caveat: Repeatability is described qualitatively; numerical RSD is not reported in available text.
7-8 · Repeatability, stability and anti-interference · Fig. 4 · Linked to 4 structured results
Co-HHTQ-MOF/GCE provides sensitive IMI detection from 0.4 to 30 nM with a 0.086 nM LOD and 0.120 uA nM-1 cm-2 sensitivity.
Caveat: Performance is for an electrode composite sensor, not a standalone conductivity device.
1,7 · Abstract; Determination of IMI · Fig. 3 · Linked to 5 structured results
SEM, XRD, FTIR, and BET data support successful formation of layered Co-HHTQ-MOF with high crystallinity and porous nanosheet morphology.
Caveat: No CIF or full structure refinement is provided in the assigned documents; phase assignment relies on reported XRD peak matching and spectroscopic/morphological evidence.
1,4-5 · Abstract; Structural features · Fig. 1 · Linked to 5 structured results
Co-HHTQ-MOF is designed as an intrinsically conductive 2D MOF where pi-d conjugation and pi-pi stacking in the layered framework promote electron delocalisation and charge transport.
Caveat: The paper reports EIS-derived interfacial resistance for the electrode, not a direct four-probe conductivity measurement of pristine Co-HHTQ-MOF powder.
2,5,7 · Introduction; Electrochemical characterization; Determination of IMI · Fig. 2A · Linked to 5 structured results
IMI reduction at Co-HHTQ-MOF/GCE is assigned as diffusion-controlled because peak current correlates better with square-root scan rate and the log Ip-log v slope is close to 0.5.
Caveat: Full raw scan-rate data are not available in the SI text layer.
6 · Optimization variables · Fig. 2C-E · Linked to 3 structured results
Names and aliases are kept exactly within the paper’s own identity model.
| Material | Composition | Structure context | Source |
|---|---|---|---|
| Co-HHTQ-MOF | Not specifiedCo2+ / cobalt coordination centres · HHTQ; 2,3,7,8,12,13-hexahydroxytricycloquinazoline / quinazoline 6-hydroxytricyclic ligand | 2D · Pristine2D conductive metal-organic framework; layered/plate-like nanosheets with Co-O coordination, pi-pi stacking, and pi-d conjugation. | 1-2 · Abstract; Introduction |
| Fe-HHTQ-MOF | Not specifiedFe ions · HHTQ ligand | unknown · PristineHHTQ-based MOF comparison material; structure and synthesis not described in available text. | 6 · The electrochemical response of IMI at different electrodes · Fig. S2 |
| Glassy carbon electrode | C | unknown · Model SystemCommercial glassy carbon working electrode control. | 2-3 · Reagents and instruments; Preparation of Co-HHTQ-MOF/GCE |
| HHTQ ligand | Not specifiedHHTQ; quinazoline 6-hydroxytricyclic ligand | 0D · PristineOrganic ligand control with extended pi-conjugated system; rod-shaped monocrystalline structures by SEM. | 2,4 · Introduction; Structural features · Fig. 1B |
| Ni-HHTQ-MOF | Not specifiedNi ions · HHTQ ligand | unknown · PristineHHTQ-based MOF comparison material; structure and synthesis not described in available text. | 6 · The electrochemical response of IMI at different electrodes · Fig. S2 |
Sample form, processing state and composition status define the context for measurements.
| Sample | Form and role | Processing and geometry | Source |
|---|---|---|---|
| Bare GCEresearch_0898__mat__mat_gce | Electrode · Pristine Control · Model | GCE ground with Al2O3 and washed with deionised water.glassy carbon electrode | 3 · Preparation of Co-HHTQ-MOF/GCE |
| Co-HHTQ-MOF/GCEresearch_0898__mat__mat_co_hhtq_mof | Electrode · Target Sample · Composite | 5.0 uL aqueous Co-HHTQ-MOF suspension drop-cast onto polished GCE and dried under infrared light.glassy carbon electrode (GCE, 3 mm) | 3 · Preparation of Co-HHTQ-MOF/GCE |
| Co-HHTQ-MOF powderresearch_0898__mat__mat_co_hhtq_mof | Powder · Pristine Control · Pristine Framework | As-synthesised powder after centrifugation, washing with water/acetone, and vacuum drying at ambient temperature. | 2 · Synthesis of Co-HHTQ-MOF |
| Fe-HHTQ-MOF/GCEresearch_0898__mat__mat_fe_hhtq_mof | Electrode · Pristine Control · Composite | MOF-modified GCE comparison electrode; preparation details not specified.glassy carbon electrode | 2 · Electrochemical response of IMI at electrodes of different MOF materials · Fig. S2 |
| HHTQ/GCEresearch_0898__mat__mat_hhtq_ligand | Electrode · Pristine Control · Composite | HHTQ-modified GCE; preparation details not specified in available text.glassy carbon electrode | 5-6 · The electrochemical response of IMI at different electrodes · Fig. 2B |
| Ni-HHTQ-MOF/GCEresearch_0898__mat__mat_ni_hhtq_mof | Electrode · Pristine Control · Composite | MOF-modified GCE comparison electrode; preparation details not specified.glassy carbon electrode | 2 · Electrochemical response of IMI at electrodes of different MOF materials · Fig. S2 |